<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    ul li {
      list-style: none;
      width: 200px;
      height: 200px;
    }
    ul {
      width: 600px;
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      column-gap: 20px;
      grid-template-rows: 1fr 1fr 1fr;
      row-gap: 20px;
    }
    /* li:first-child{
      grid-row-start: 1;
      grid-row-end: span 2;
    } */
  </style>
</head>
<body>
  <div class="page">
    <ul>
      <li style="background: red;">1</li>
      <li style="background: rgb(217, 148, 46);">2</li>
      <li style="background: rgb(226, 223, 21);">3</li>
      <li style="background: rgb(171, 238, 14);">4</li>
      <li style="background: rgb(4, 221, 170);">5</li>
      <li style="background: rgb(15, 190, 238);">6</li>
      <li style="background: rgb(28, 45, 226);">7</li>
      <!-- <li style="background: rgb(217, 54, 239);">8</li> -->
      <!-- <li style="background: rgb(223, 29, 97);">9</li> -->
    </ul>
  </div>
</body>
</html>